Flubba released a new version of his great Gameboy emulator for the GBA. Changes are:

Added support for clock in games which use it. Added support for 32kbyte external RAM,!!BEWARE!! it’s not saved. Fixed joypad reads, no games should use the SGB functions. Fixed sprite size (Chase HQ). Resets more hardware regs before exiting. Workaround for the XG2 bootmenu.

You can download the new release from his homepagehere